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Autophagy01:27

Autophagy

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
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Lysosomal Hydrolases01:22

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Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
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Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
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Autophagic Cell Death01:18

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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
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Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
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Parkinson Disease ll: Pathophysiology01:24

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Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
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Related Experiment Video

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Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs
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Neuronal autophagy and neurodevelopmental disorders.

Kyung-Min Lee1, Su-Kyung Hwang, Jin-A Lee

  • 1Department of Anatomy, Graduate School of Medicine, Kyungpook National University, Daegu 700-422, Korea.

Experimental Neurobiology
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Neurodevelopmental disorders are linked to genes affecting neural development and autophagy. This review explores neuronal autophagy

Keywords:
autophagyhomeostasismTORneurodevelopmentneurodevelopmental disorders

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Neurodevelopmental disorders (NDDs) encompass conditions like autism spectrum disorders and intellectual disability.
  • Genetic mutations impacting neural development and synapse function are implicated in NDDs.
  • Emerging evidence links genes and pathways involved in NDDs to the cellular process of autophagy.

Purpose of the Study:

  • To review the current understanding of neuronal autophagy.
  • To highlight recent genetic findings related to NDDs and autophagy.
  • To elucidate the role of autophagy pathways in common neurodevelopmental disorders.

Main Methods:

  • Literature review of scientific articles.
  • Analysis of genetic studies on neurodevelopmental disorders.
  • Examination of research on the autophagy pathway in neuronal function.

Main Results:

  • Identified specific genes and pathways associated with both NDDs and autophagy.
  • Highlighted the complex role of autophagy in neuronal development and function.
  • Summarized current knowledge gaps regarding autophagy's role in NDD pathogenesis.

Conclusions:

  • Autophagy is a critical cellular process with significant implications for neurodevelopment.
  • Further research into autophagy-related pathways is crucial for understanding and treating NDDs.
  • Genetic factors influencing autophagy represent promising targets for future therapeutic strategies.